Aastra Ascotel IntelliGate A150 - Page 154

System Functions and Features as of I7.9
154 Call routing
syd-0200/3.0 – I7.9 – 11.2009
Call destination: Busy User Group
A user group is busy if all its members are busy, if call waiting is rejected, if call wait-
ing is not enabled for any of the user group members and if neither the element
Operator Console nor the element General Bell is activated.
A UG with activated Home Alone is busy if at least one of the UG’s users is in an out-
side call or an internal call (see "Home alone", page 467).
If a user group is busy, an incoming call is routed to user group 16. If user group 16
is also busy,
• the caller in the public ISDN network will obtain the congestion tone after call
waiting has been rejected;
• the caller in the private leased-line network will obtain the congestion tone.
• a call from the public analogue network will wait until the user is free after call
waiting has been rejected.
Fig. 67 Call distribution if user group busy
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